Sheet-delivery mechanism.



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SHEET DELIVERY MECHANISNH.

(Application led Mar. 10, 1897.;

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INVENTORI` 'diff Wy l By A :as coA pHoro-Uma., wAsNmaroN. lz cy No. 649,957. Patented May 22, |900. W. SCOTT. SHEET DELIVERY MECHANISWL (Application led Mar. 10, 1897.

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WITNESSES; /5 5% No. 649,957. Patented May 22, |900. W. SETT.

SHEET DELIVERY MECHANISNI.

(Application tiled Mar. 10, 1897.1

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INENTOR;

WITNESSES:-

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No. 649,957. Patnted May 22, |900.

- W. SCOTT.

SHEET DELIVERY MECHANISWH.

(Application filed Mar. 10, 1897.)

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Patented May 22, |900.

W. SCDTT. SHEET DELIVERY MECHANISIW.

(Application lel Mm. 10, 1897.;

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No. 649,957. Patented May 22, |906. W. SCDTT.

SHEET DELIVERY MECHANISM.

(Application filed Mar. 10, 1897.'

6 Sheets-Sheet 6,

(N0 Model.)

. wh/Lawa@ Snom/Lto@ M l dpit- .mf @www we Norms prrns cn, worammm wAsmNm'oN. n` cy STaTns vl/ALTER SCOTT, OF PLAINFIELI), NEIV JERSEY.

SHEET-DELIVERY MECHANISVI.

SPECIFICATION forming part of Letters Patent No. 649,957, dated May 22, 1900. application ined Mtl-th 10,1397. semi No. 626,906. (No moda.)

To all Vizo/"1,0m, it may conceive:

Be it known that'l, WALTER SCOTT, a citizen of the United States, and a resident of Plainfield, in the county of Union and State of New Jersey, have invented certain new and useful.Improvements in Sheet-DeliveryMechanism, of which the following is a specification.

This invention relates to mechanism for delivering printed products upon iiat receiving or delivery boards, the object of the invention being the improvement of the operation and the simplification of the mechanism.

In the practice ot' this invention I employ a sheet-forwarder, to which the sheets from the impression-cylinder are delivered, an eX- tensible collapsible support, onto which the sheets are run from the forwarder, and an auxiliary feeder, which moves the sheets farther along on the support than they are placed by the forwarder. Concerning the forwarder it may be observed that it4 may be conveniently made of endless tapes running on rollers or pulleys and that itis preferred to have it act on both sides of the sheets. The eX- tensible collapsible sheet-support is conveniently made of a setof discontinuous tapes or equivalent, which are connected directly or indirectly at one end to the frame of the machine and at the other end to an oscillating roller having also a motion of translation back and forththat is, a bodily motion to and fro-which alternately winds and unwinds them. Of the auxiliary feeder I observe that it is preferably provided with a toand-fro moving element or mem ber, as to-andfro moving rollers or pulleys, between which the sheets are fed or run by the forwarder to the support above referred to. I also remark lthat the details of the forwarder, the support, and the auxiliary feeder maybe varied in many ways without departing from the combinations of which these are parts or elements. In one or two cases I will hereinafter indicate modifications of these parts that may be made without departing' from the essentials of the invention herein claimed.

The invention also includes the combination of a roller or pulleys, to which one end of a discontinuous sheet-support is fast and which winds and unwinds the support, a pinion fast on or otherwise connected to the said roller to rotate the same, and a rack of greater| pitch than the pinion, which meshes with the pinion, one of said rack-and-pinion roller elements having a bodily to-and-fro motion,l while the other is fixed against what the books call a motion of translation, the purl pose of the combination being to compensate for the decreasing and increasing` diameters of the roller plus the tapes (orequivalent) as these unwind and wind by the increasing and decreasing speeds of rotation of the roller, and thus keep the tapes taut or tightly stretched. It will be understood that if the pinion and roller have onlya motion of rotation the rack will have a to-and-fro motion.

The invention also includes other combinations, as will hereinafter more fully appear, and the whole lis pointed out more particularly in the claims concluding this specilication.

The invention is illustrated in the accompanying drawings, (foursheets,) forming part of this specification, in which- Figure lis a side elevation of part of a tworev0lution stop-cylinder printing-press, showing the invention applied to and used in connection therewith. Fig. 2 is an e11- larged side elevation of part of the delivery apparatus shown in 1. Fig. 3 is an end view of the parts shown in Fig. 2. Fig. 4; is a side elevation of part of a printingpress, showing a modification of the invention applied to and used in connection therewith. Fig. 5 is a plan view of the modification shown in Fig. 4. Fig. 6 is an enlarged side elevation, on the plane indicated in Fig.V

7 by the line 6 6, of the delivery apparatus shown in Fig. 4; and Fig. 7 is an end view of the parts shown in Fig. 6. Fig. 8 is a diagrammatic view of a normal or usual form of rack adapted to coact with a pinion of given pitch. Fig. 9 is a like view of a rack Whose teeth are brought closer together and which is adapted to coact with a pinion of the same pitch as that stated above in connection with Fig. S, thus compensating for varying diameter of a tape winding and unwinding roller.

Fig. IO is a side View of a modification 0f certain parts of the mechanism shown in Fig. 6 with certain parts omitted.

Referring to Figs. l, 2, and 3, the referenbeletter F marks a suitable framework, in which IOO the Working parts of the machine are mounted in appropriate manners. The letter C indicates the impression-cylinder, and the letter B the reciprocating bed or form-carrier. The cylinder is provided with suitable sheet-re tainers, as the grippers G, and a set of liftingiingers, as L. A cog or tooth T on theirnpression-cylinder forms part of a stopping and starting mechanism therefor, such as that shown in my Letters Patent granted on the 3d day of October, 1893, and bearing number 505,961. The sheets are fed to the cylinder in any suitable Way, as from a feed-board.

I have shown a two-revolution stop-cylinder press in Figs. 1, 2, and 3; but it is obvious that any suitable form of printing-press may be used for printing and delivering the sheets between the fixed guides 3 4, respectively, supported by the shafts 5 (i in the framework F. The sheets are moved away from the cylinder by the tapes 7, which run on the rollers 8, and the coacting rollers 10.

' The rollers or pulleys 8 are driven in a suitable manner, as by the train of pinions 9, connecti'ng the roller With the cylinder C. From the last pair of rollers 8 10 the sheets are run upon the extensible collapsible support S. This 'support is shown in Figs. 1, 2, and 3 as formed of a series of discontinuous tapes 11 or the like, the bar 12, to which the tapes are fast at one end, and the roller or pulleys 13, to which the tapes are fast at the other end, the roller 13 being journaled in the movable frame 14. This supplemental frame 14 is suitably mounted and guided on the frame F, so that it is moved to and fro in the direction in which the sheets are run from the cylinder C. The frame 14 is provided With a double rack 15, Which is in mesh With the double pinion` 16, carried by the shaft 17, journaled in and extending across the frame F. At one end the shaft 17 is provided with the mitergear v18, which is in mesh with a miter-gear 19, carried by the upright. shaft 20 at. one side ofV the machine. The shaft 2O is provided near itsllower end With a spur-pinion 21, Which is in mesh with the to-and-fro moving rack 22, which is suitably guided in the frame F. The rack 22 is` moved back and forth by the link or pitman-rod 23 and the rotating crank 24, the pitinan-rod being suitably pivoted' to the tWo. The shaft 25, which carries the crank 24, is also provided with cams 26 for a purpose to be described, the shaft and cams making' one turn to one reciprocation of the bed B.

The pulleys 13 above mentioned are carried by a shaft 27, which is suitably journaled in the f'r'ame 14, the shaft 27 being provided with a pinion 28. The frame F has a rack 29 fixed thereto,the rack preferably being of a pitch or number of teeth per given length along the pitch-line which is greater than that of the pinion 28, with which it meshes. This is illustrated diagrammatically in Figs. 8 and 9, where Fig. 8 shows what may be termed a ,nrinal or the usualV rack for engagenient-with pinion 2,8, and Fig. 9 shows a compensated rack or one wherein the rack-teeth y are brought nearer each other by a distance whichV is the quotient due to dividing the difference between the circumferences of the roller or pulleys 13 plus the tapes or apron at the time the tapes or apron are whollyor fully Wound up and when they are fully unwound in the normal operation of the machine by the number of teeth in the rack. The amount of such reduction is only a small fraction of an inch, and the difference in pitch of the normal and compensated racks is not noticeable, except several teeth of each rack be considered. The effect of such compensation is to cause the tapes to fully Wind and unwind While the pulleys 13 are moving a slightly-shorter distance than Would be the case were a normal rack used-that is, the pulleys 13 are caused to rotate faster in the case of the compensated rack than they Would in the case of a normal rack; or, to state it dilferently, for equal motions of translation the amount of tape unwound and wound in the case of the compensated rack is greater than in the case of the normal rack. The tapes l1 may be fastened tothe bar 12 directly or,better,by 'means of the springs 30, which are fast to the tapes and to the bar. As the pulleys 13 are run out by the frame 14 the tapes 11 unwind from the pulleys at a constantly-decreasing rate of speed, which speed is greater than Would be the case were the rack not compensated, as described, and which is due to the described difference in the pitches of the rack 29 and the pinion 28, thus compensating for the constantly-decreasing diameter of the pulleys plus the thickness of the tapes wound thereon. Nhen the motion of the shaft 20 and the frame 14 is reversed, the pulleys have their motion reversed and they begin to Wind up the tapes 11 from under the head of the sheet, which thereupon falls head first onto the delivery-board D.

An auxiliary sheet feeder or mover is employed to urge the sheets forward after they have passed the tapes 7 and the last rollers 8 and 10. The auxiliary shown in Figs. 1, 2, and 3 comprises the tapes 31, the pulleys 32 33 3435, thearms 36, the axis 37, andthe arm 38. The tapes 31 run on the pulleys 8 32 33 34, as shown, and the pulleys 35 are moved by the tapes, said pulleys 34 35 being in line with the pulleys 8 10 and receiving the sheets therefrom. The arms 3G are forked at their upper ends toreceive the slides 40, which carry the rollers 34 35. The ends 39 of the slides 40 are guided in a suitable manner by thc frame F, as by a slot, and are caused to move to and fro in right or straight lines. The arms 38 rest on the cams 26, above named, and, with the parts 32, 33, 34, 35, 36, 39, and 40, are moved to and fro bythe cams. The parts being in the positions shown in Fig. 1, there is in the continued operation of the machine a sheet lying on the tapes 7 with its head near the pulleys 35, and the operation of the parts thus far described is asfollows: A sheet is IOO IIO

649,957 til tated bythe rack 29, thus causing the tapes to be unwound as the frame 14 moves outward, at the same time the tapes 7 are feeding the sheet onto the tapes 11, being assisted in the operation by the tapes 31 and pulleys 35'. Before the rollerl reaches the end of its outwardmovement and reversesits direction of motion the arms 3,8 are moved by thecams 26 and the arms 36 are moved toward the delivery-board D and the rollers 34 35 continue to feed the sheet forward, and the arms 36 are moved backward j ust ahead of the returning roller 13. By this auxiliary feeder the sheets are moved along after they have passed beyond thecontrol of the tapes 7, so that they will clear the support S and be delivered, the roller 13 rolling from under them as it.. reaches the position shown in Fig. 1.

The modification shownfin Figs. 4, 5, 6, and 7 lies chiefly in the auxiliary feeder. The parts that are common tothe machines shown in these figures and in Figs. 1-, 2, and 3 bear similar references and will not be further described. The tapes 11 are fast directly to the wardly near the arm 56, 'The arm 56 is provided Vith `a pin 6l, with -which the trigger 59 engages, as shown in fthe roller't) Aat this time bar 12, which extends across the machine-` frame, and are also fast to the barrel 50, .which is suitably journaled at one end 51 in the frame 14, while at itsother end the barrel fits over the stud or disk bearing 52 on the frame 11.1.- A helical spring 53 within the barrel 50 irs made fast at one end to the barrel and at the other end to the stud 52, its tension being such that it tends to roll or wind up the tapes 11 ou the barrel 50. AThe auxiliary feeder ,comprises the fingers 54, ,fast on a shaft 55, which is journaled in the framework'F, an arm 560m said shaft, a spring 57, fast to the arm 56 and to an arm 58 on the Vframe F, and devices for setting and releasing the parts j ust described. A trigger 59 is pivoted to the frame F and is pressed upas by a spring` 60.

Figs. 4 and 5. The-trigger 59 is moved downward, thus releasing the arm 56, by the pin 63 -on the rack 15, which pin presses on top of the trigger as the rack 15 reaches the end of its motion'frorn the cylinder C. This hap pens shortlyafter the. tails of the sheetsare past the rollers 8 10. On the release of the arm ,56.the spring 57 draws the arm 56 and the fingers 54 sharply away from the cylinder C, so that the lingers 54 strike the tails'of the lsheets forcibly and move the sheets along on the tapes llbeyond the position of the roller '5D-.Shown in Figs. 4 and 5, though of course is in the position shown in Fig. 6. The arm 56 moved toward the cylinder C by the roller 62, which is carried by the rack 15, and the pin 61 forces down the trigger 59 and engages therewith as -the rack l5 moves toward the cylinder C.

The arms 64 stop the sheets as the same'are projected forward on or by the tapes 11. The arms 6st are carried by the shaft 65, which extends across the end of the machine.

In order to insure that the sheets shall lie evenly on the board D, the following mechanism may be employed: The board D is p1'o vided with a series of grooves or guides 66, extending along the saine parallel to the direction in which the lsheets are fed forward on thetapes 11. A series of upright packers G7 are guided by these grooves 66 as they are moved to and fro bythe bar 68, to which they are attached, and the bars or rods'69, to which b'ar 68 is adj ustably attached; 'lhe rods 69 are suitably guided on the frame F or boa-rd D, as by the lugs on the board. The rods 69 are 4moved to and'fro by the arms 71 of a rock-shaft 72, journaled in the frame F. The arms 71 are forked at their ends to engage with the pins 73 on the rods 69. Springs, fast to the frameF and to the rods 69, serve to draw the bars 69 toward the cylinder C.

The rods 69 and attached parts are moved away from the cylinder Cat the proper time by the'lever 74, which is pivoted to the frame F in a convenient place and'coacts with the pin or lug 75 on an arm 71 of the shaft 72, being itself operated by the 1,5, as shown in Fig. 4. In order to uprevent the sheets from being unevenly placed by the packers'67, there may be employed the rocking lingers 77, which are carried bya shaft at the end of the boardD. lThe shaft 80 is provided with an'arm 78, which lios in the path of the rack 15'and is operatedthereby to move the lingers 77 away from lthe cylinder C. As thev rack 15 recedes toward the cylinder C the fingers 77 are drawn toward the cylinder C, as by a spring 81 or a weight 79, or both, and push the sheets that are displaced back into the stack lying on the board D.

While I have shown the rack 29 as fixed and the pinion 28 and roller 13 as having both a motion of translation and motion of rotation,

.1t must be understood that this construction is capable of inversion in so far as. that the rack 29 may be moved to and fro-zl e., have a motion of translation-while the pinion 28 and roller 13 haveonly motion of rotation, the relative pitches differing, as above de scribed. 'lhus in a case where one end of the tapes llare wound and unwound bya roller 13X, journaled in the frame Fand provided with a pinion 28, and the rack 29X (which is compensated, ashereinbefore described) is secured to one ofthe racks 15 and the tapes or apron vH run about a roller (or pulleys) 14X, which is jouru'aled in armsly aforesaid, all as shown in Fig. 10, the same compensation as above described may be secured. It is ob; viousthat 'many other changes maybe made pin 76 on the rack Ixo without departing from the spirit of this invention.

ln the form of the invention shown in Figs. 1, 2, and 3 the sheets lie at times onthe parts of the tapes that are wound on the roller and are unwonnd therefrom, and I have shown such roller and its gear as the part or element which, in combination with a rack having its teeth brought closer together, as indicated in Fig. 9, to 'canse the roller to revolve faster than it otherwise would, compensates for the variations in the diameter of `the roller plus the varying thickness of the tapes wound thereon and so keeps the support tightly stretched. In so far as this compensatory nc' tion is concerned it is of course immaterial ,Whether the sheets ever actually lie pon or touch the parts ofthe tapes (or their equivalent, an apron) that are so Wound` and un` wound. Thnsihe support may be connected (directly or indirectlyiat one end with a roller or Winder 13X, (as by a cord or ligament which passes about an idler 14X and is fastened to while the sheets are run upon the support which is extended while the sheets are so run and which is Withdrawn from under the same at one end and so delivers them.

1. In a sheet-deliyery, the combination of the impression-cylin`fer, asbest-forwarder to `which the sheets from the cylinder are delivered, an extensible collapsible support onto which the forwarder runs the sheets, andan auxiliary sheet-feeder for moving the sheets farthr'along thesaid support, substantially as described. i

2. In a sheet-delivery, the combination of f the im pressioncylinder,a set of tapes to which the sheets from the cylinder are deliyered, an extensible collapsible .support onto-which the tapes run the sheets, and an auxiliary sheet feeder for moving the sheets farther along the saidsnpport substantially as described.

3. In a sheet-delivery, the combination of the impression-cylinder,a set of tapes to which the sheets from the cylinder are delivered, a

i flexible support connected at one end to the frame of the machine, a to-and-fro movable roller to which the other end of lthe support is attached and which winds and unwinds the Substantially as described.

. 4. ln a sheet-delivery, the combination of the impression-cylinder,a-set of tapes to which the sheets from the cylinder are delivered, a.v iexi'ble support connected at one end to thev.1 -'rame of the machine and onto which the tapes run the sheets, a to-and-fro movable roller to whichthe other end of the support is attached and which winds 'and unwindsl the support, and a to-and -fro movable auxiliary. sheetfeeder for moving the sheets farther along the support, substantially as described.

5. ln a sheet-delivery, Vthe combination 'of the impression-cylinder, a sheet-forwarder to which the sheets from the cylinder are delivered, a llexible support connected at one end to the frame of the machine, a to-and-fro movable roller to which the other end of the support is'attached and which winds and unwinds thesnpport, and an auxiliary sheet-feeder for moving the sheets farther along the support substantially as described.

6. In a sheet-delivery, the combination of the impression-cylinder, a sheet-forwarder to which the sheets from-the cylinder are delivered, a flexible support connected at one end to the frame of the machine, a to-and-fro movable roller'to which the other end of the support is attached and winds and unwinds the support,.and an auxiliary sheet-feeder having a to-and--fro moving element for` moving the sheets farther along the support, substantially as described.

7. Ina sheet-delivery, the combination of the impression-cylinder, the set of tapes 7 to which thesheets aredelivered from the cyluder, the tapes llconn'ected at one end to the frame of the machine, the roller to which the tapes 1l .are attached, a movable frame in which the said roller is journaled, means for rotating the roller, the swinging arms 36,

the rollers or pulleys. 34, 35, moved to and fro by said arms, and mechanism for swinging the 'arms 36 to and fro, and the tapes' running on the roller 34, substantially as described.

8. The combination of the impression-cyl index', the set of tapes 7 to which the sheets .TOO

are delivered from the cylinder, the extensi---` ble collapsible support to which the sheets are delivered -by the tapes 7, the swinging arms 36, the roller or pulleys 3l, 35, moved to and fro by said arms, the tapes running on the roller orpnlleys 34, and means for swinging the arms 36 to and fro, substantially as deL scribed.

9.. The combinationiof the impression-cylinder, the sheet-forwarder to whichlthe sheets from the cylinder'are delivered, the extensible collapsible sheet-support onto which the said forwarder runs the sheets, the roller-sor pulleys 34, 35, between. vwhich the sheets pass from the forwarder to the support, and mechanism for moving said rollers 3 4, 35, to and fro bodily and forl rotating the same, snbstanp tially as described.

10. The combination of the impression-cylinder, the sheet-forwarder to which the sheets from the cylinder are delivered, the extensible collapsible vsheet-support onto which the said forwarder runs the sheets, the rollers or pulleys 34, 35, between which the sheets pass from the forwarder to the support, the slides for carrying said rollers, and means for reciprocating` said slidesand for rotating said rollers, `substantially as described.

l1. The combination of the impression-cylinder, the sheet-forwarder to which the sheets from the cylinder are delivered, the extensible collapsible sheetsupport onto which the said forwarder runs the. sheets, the rollers or pulleys 34, 35, between which the sheets pass from the forwarder to the support, the slides for carrying said rollers, the pivoted arms for reciprocating said slides, and mechanism for operating said arms and for rotatingl said rollers 34, 35, substantially as described.

12. The combination of the impression-cylinder, the sheet-forwarder to which the sheets from the cylinder are delivered, the extensible collapsible sheet-support onto which the said forwarder runs the sheets, the rollers or pulleys 34, 35, between which the sheets pass from the forwarder to the support, the tapes passing' over the roller 34, and mechanism 'for moving said rollers 34, 35, to and fro bodily and for moving said tapes, substantially as described.

13. The combination of the impression-cylinder, the sheet-forwarder to which the sheets from the cylinder are delivered, the eXtensible collapsible sheet-support onto which the said forwarder runs the sheets, the rollers or pulleys 34, 35, between which the sheets pass from the forwarder to the support, the slides for carrying said rollers, the tapes passing;l over the roller 34, and means for moving said slides to and fro and for moving said tapes, substantially as described. y

14. The combination of the impression-cylinder, the sheetforwarder to which the sheets from the cylinder are delivered, the extensible collapsible sheet-support onto which the said forwarder runs the sheets, the rollers or pulleys 34, 35, between which the sheets pass from the forwarder to the support, the slides for carrying` said rollers the pivoted arms for reciprocating said slides, the tapes passing over the roller 34, and devices for moving said arms and said tapes, substantially as described. y

15. In a sheet-delivery employing' an extensible collapsible sheet-support, the combination of a discontinuous sheet-support, a roller (or pulleys) to which one end of the support is connected, a toothed gear connected with and rotating. the roller, and a rack of greater pitch than said gear and meshing therewith, one of said rack and gear-roller elements having ato-and-fro motion of translation While the other of said elements is fixed against motion of translation, substantially as described.

16. In a sheet-delivery employing an eX- VALTER SCOTT.

Witnesses:

WILLIS ,13. Down, RICHARD W. BARKLIIY. 

